A single pass color highlighting copying system

(19)

(11)

EP 0 356 117 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	10.04.1991 Bulletin 1991/15

(43)	Date of publication A2:
	28.02.1990 Bulletin 1990/09

(21)	Application number: 89308282.6

(22)	Date of filing: 15.08.1989

(51)	International Patent Classification (IPC)⁵: G03G 15/01

(84)	Designated Contracting States:
	DE FR GB

(30)

Priority:

18.08.1988 US 233408

(71)	Applicant: XEROX CORPORATION
	Rochester New York 14644 (US)

(72)	Inventor:
	Dibianca, Anthony J. Downingtown, PA 19335 (US)

(74)	Representative: Goode, Ian Roy et al
	Rank Xerox Ltd Patent Department Parkway Marlow Buckinghamshire SL7 1YL Marlow Buckinghamshire SL7 1YL (GB)

(56)

References cited: :

(54)	A single pass color highlighting copying system

(57) An apparatus in which a copy of an original document has selected portions thereof color highlighted. An editing device (16), associated with an electrophotographic printing machine (10), selects the portions (M, N) of the document (34) to be reproduced in a highlight color with the remainder of the copy being reproduced in another color. The printing machine, in response to the signal transmitted from the edit pad, records a latent image on a photoconductive surface having a plurality of charge levels. These charge levels are developed simultaneously with different color developer material. The resultant developed image has different colors therein. This developed image is transferred to a copy sheet and fused thereto forming a color highlighted copy.

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